package com.rundatop.core.wxpay.utils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ConnectException;
import java.net.URL;
import java.net.URLConnection;
import java.util.Map;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;

import net.sf.json.JSONObject;

public class HttpTool {

	// 得到openid
	public final static String get_token_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code";
	// 得到用户详细信息 2.0认证方式
	public final static String oauth_info = "https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID&lang=zh_CN";


	public static String getToken(String appid, String appsecret, 
			String grantType, String code) {
		String url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="+appid+"&secret="+appsecret+"&code="+code+"&grant_type=authorization_code";
		JSONObject jsonObject = httpRequest(url, "GET", null);
		return jsonObject.toString();
	}

	public static String getUserDetail(String access_token, String openid) {
		String requestUrl = oauth_info.replace("ACCESS_TOKEN", access_token)
				.replace("OPENID", openid);
		JSONObject jsonObject = httpRequest(requestUrl, "GET", null);
		return jsonObject.toString();
	}

	/**
	 * 使用Get方式获取数据
	 * 
	 * @param url
	 *            URL包括参数，http://HOST/XX?XX=XX&XXX=XXX
	 * @param charset
	 * @return
	 */
	public static String sendGet(String url, String charset) {
		String result = "";
		BufferedReader in = null;
		try {
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection connection = realUrl.openConnection();
			// 设置通用的请求属性
			connection.setRequestProperty("accept", "*/*");
			connection.setRequestProperty("connection", "Keep-Alive");
			connection.setRequestProperty("user-agent",
					"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 建立实际的连接
			connection.connect();
			// 定义 BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(connection
					.getInputStream(), charset));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			//System.out.println("发送GET请求出现异常！" + e);
			e.printStackTrace();
		}
		// 使用finally块来关闭输入流
		finally {
			try {
				if (in != null) {
					in.close();
				}
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		return result;
	}

	/**
	 * POST请求，字符串形式数据
	 * 
	 * @param url
	 *            请求地址
	 * @param param
	 *            请求数据
	 * @param charset
	 *            编码方式
	 */
	public static String sendPostUrl(String url, String param, String charset) {

		PrintWriter out = null;
		BufferedReader in = null;
		String result = "";
		try {
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent",
					"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			out = new PrintWriter(conn.getOutputStream());
			// 发送请求参数
			out.print(param);
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(
					conn.getInputStream(), charset));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			//System.out.println("发送 POST 请求出现异常！" + e);
			e.printStackTrace();
		}
		// 使用finally块来关闭输出流、输入流
		finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null) {
					in.close();
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return result;
	}

	/**
	 * POST请求，Map形式数据
	 * 
	 * @param url
	 *            请求地址
	 * @param param
	 *            请求数据
	 * @param charset
	 *            编码方式
	 */
	public static String sendPost(String url, Map<String, String> param,
			String charset) {

		StringBuffer buffer = new StringBuffer();
		buffer.append("<xml>");
		if (param != null && !param.isEmpty()) {
			for (Map.Entry<String, String> entry : param.entrySet()) {
				if (entry.getKey().equals("attach")
						|| entry.getKey().equals("body")
						|| entry.getKey().equals("sign")) {
					buffer.append("<" + entry.getKey() + ">");
					buffer.append("<![CDATA[" + entry.getValue() + "]]>");
					buffer.append("</" + entry.getKey() + ">");
				} else {
					buffer.append("<" + entry.getKey() + ">");
					buffer.append(entry.getValue());
					buffer.append("</" + entry.getKey() + ">");
				}
			}
		}
		buffer.append("</xml>");
		PrintWriter out = null;
		BufferedReader in = null;
		String result = "";
		try {
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent",
					"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			out = new PrintWriter(conn.getOutputStream());
			// 发送请求参数
			out.print(buffer);
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(
					conn.getInputStream(), charset));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			//System.out.println("发送 POST 请求出现异常！" + e);
			e.printStackTrace();
		}
		// 使用finally块来关闭输出流、输入流
		finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null) {
					in.close();
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return result;
	}

	public static JSONObject httpRequest(String requestUrl,
			String requestMethod, String outputStr) {
		JSONObject jsonObject = null;
		StringBuffer buffer = new StringBuffer();
		try {
			// /1、解决https请求的问题

			// 创建SSLContext对象，并使用我们指定的信任管理器初始化
			TrustManager[] tm = { new MyX509TrustManager() };
			SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
			sslContext.init(null, tm, new java.security.SecureRandom());
			// 从上述SSLContext对象中得到SSLSocketFactory对象
			SSLSocketFactory ssf = sslContext.getSocketFactory();

			URL url = new URL(requestUrl);
			HttpsURLConnection httpUrlConn = (HttpsURLConnection) url
					.openConnection();
			httpUrlConn.setSSLSocketFactory(ssf);

			httpUrlConn.setDoOutput(true);
			httpUrlConn.setDoInput(true);
			httpUrlConn.setUseCaches(false);

			// /2、兼容GET、POST两种方式

			// 设置请求方式（GET/POST）
			httpUrlConn.setRequestMethod(requestMethod);

			if ("GET".equalsIgnoreCase(requestMethod)) {
				httpUrlConn.connect();
			}

			// /3、兼容有数据提交、无数据提交两种情况

			// 当有数据需要提交时
			if (null != outputStr) {
				OutputStream outputStream = httpUrlConn.getOutputStream();
				// 注意编码格式，防止中文乱码
				outputStream.write(outputStr.getBytes("UTF-8"));
				outputStream.close();
			}

			// 将返回的输入流转换成字符串
			InputStream inputStream = httpUrlConn.getInputStream();
			InputStreamReader inputStreamReader = new InputStreamReader(
					inputStream, "utf-8");
			BufferedReader bufferedReader = new BufferedReader(
					inputStreamReader);

			String str = null;
			while ((str = bufferedReader.readLine()) != null) {
				buffer.append(str);
			}
			bufferedReader.close();
			inputStreamReader.close();
			// 释放资源
			inputStream.close();
			inputStream = null;
			httpUrlConn.disconnect();
			jsonObject = JSONObject.fromObject(buffer.toString());
		} catch (ConnectException ce) {
		} catch (Exception e) {
		}
		return jsonObject;
	}

}